Data security is a critical challenge in Power BI consulting, especially when working with sensitive financial, healthcare, or government data. Implementing Row-Level Security (RLS) and Object-Level Security (OLS) is essential to restrict unauthorized access. However, managing security roles across large organizations can become complex and difficult to maintain. Additionally, ensuring compliance with GDPR, HIPAA, and other regulations adds another layer of difficulty. Power BI consultant address these challenges by leveraging Azure Active Directory (AAD), data encryption, sensitivity labels, and Microsoft Purview to implement a secure, compliant, and well-governed Power BI environment.